black walnut

noun

: a walnut (Juglans nigra) of eastern North America with hard strong heavy dark brown wood and oily edible nuts

also : its wood or nut

Examples of black walnut in a Sentence

Recent Examples on the Web

While most leaves, except for yew, are not a problem, black walnuts, sago palm fruit, and hickory nuts are toxic to pets. — Mary Marlowe Leverette, Southern Living, 4 Nov. 2026

Leaf Shape One key distinction between tree of heaven and its lookalikes is that its leaves have smooth edges, while black walnut and sumac trees have serrated or toothed edges. — Madeline Buiano, Martha Stewart, 22 Oct. 2026

Similarly, Nakashima’s black walnut conoid chair might not be a chair at all. — Robert Sullivan, Vogue, 8 Oct. 2026

The black walnut double staircase in the center hall foyer has carved lions. — Pete Grathoff, Kansas City Star, 2 Sep. 2026

Word History

First Known Use

1610, in the meaning defined above

Rhymes for black walnut

• butternut
• cocoanut
• coconut
• hazelnut
• undercut
• abut
• catgut
• chesnut
• chestnut
• donut
• doughnut
• groundnut

Kids Definition

black walnut

noun

: a walnut of eastern North America with hard strong heavy dark brown wood and oily edible nuts

also : its wood or nut